She was offered $18 million, same as Mariah. They then upped the offer to $20 million. More money than Marbles Stern is getting from AGT. You only do these shows if your career is on a downward trend. Katy Perry is still as big as they come. She is making way more than $20 million a year between downloads and touring. Forbes had her at $45 million already this year in May. "American Idol" has reportedly been pushing hard to add Katy Perry to their roster of judges. According to TMZ, the FOX reality juggernaut initially offered the pop star $18 million (the same amount reportedly paid to newly-signed judge Mariah Carey), but Katy turned it down. PLAY IT NOW: L.A. Reid: How Is Britney Spears As An X Factor Judge? "Idol" upped their offer to the "Wide Awake" singer to $20 million for a one-year contract, but she refused, the website reported. Sources reportedly told TMZ that money isn't the issue behind Katy's decision to turn down the offers, she just doesn't feel joining the long-running show is the "right career choice for her."